var name='小明';
var age=18;
var flag=true;

function sum(num1,num2){
	return num1+num2;
}

if(flag){
	console.log(sum(20,30));
}

//1.导出方式一
export{
	flag:flag,
	sum:sum
}

//2.导出方式二
export var num1=1000;
export var height=1.88;

//3.导出函数/类
export function mul(num1,num2){
	return num1*num2
}

export class person(){
	run(){
		console.log('在奔跑')
	}
}


//5.export default
// const address='北京市'
// export{
// 	address
// }

// export const address='北京市'
// const address='北京市'
// export default address;

export default function(address){
	console.log(address)
}